CN111129808B

CN111129808B - Grounding terminal assembly, electric connector and electric connector assembly

Info

Publication number: CN111129808B
Application number: CN201811279911.7A
Authority: CN
Inventors: 肖顺群
Original assignee: Shanghai Aerospace Science and Industry Appliance Co Ltd
Current assignee: Shanghai Aerospace Science and Industry Appliance Co Ltd
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2021-07-30
Anticipated expiration: 2038-10-30
Also published as: CN111129808A

Abstract

The application provides a grounding terminal assembly, an electric connector and an electric connector assembly. A grounding terminal assembly comprises a pair of grounding terminal main bodies, a pair of connecting parts extending from the pair of grounding terminal main bodies and a shielding part connected with the connecting parts, wherein each grounding terminal main body comprises a main body part and a first upper contact part and a first lower contact part extending from two opposite ends of the main body part, and the grounding terminal main bodies and the shielding parts are not coplanar, so that the grounding terminal assembly has a better shielding effect.

Description

Grounding terminal assembly, electric connector and electric connector assembly

Technical Field

The present invention relates to a ground terminal assembly, an electrical connector and an electrical connector assembly, and more particularly, to a ground terminal assembly, an electrical connector and an electrical connector assembly for high-density and high-speed transmission in the communication field.

Background

In the electronics industry, circuit boards are typically connected to other electronic devices through electrical connectors. With the rapid development of information technology, the functions of electrical connectors are gradually enhanced and improved. The demand for high speed increases in data storage and faster transmission speeds have caused large changes in the interface, and high density electrical connectors have been produced and widely used in the electronics industry. Generally, the number of terminals of the high-density electrical connector is large, and the size of the electrical connector cannot be too large due to the limitation of the installation space, so that the terminal pitch becomes very small, and the phenomenon of internal electromagnetic interference during signal transmission is serious. For a high-density electrical connector with a precise structure, the small electromagnetic interference generated by other external electronic devices can easily affect the telecommunication transmission.

Disclosure of Invention

The application provides a ground terminal subassembly, electric connector and electric connector subassembly that shielding effect is better.

One aspect of the present application provides a ground terminal assembly, including a pair of ground terminal main parts, respectively from a pair of a connecting portion that the ground terminal main part extends and connect a pair of the shielding part of connecting portion, the ground terminal main part include the main part and from first last contact site and the first contact site down that the relative both ends of main part extended, the ground terminal main part with the shielding part is not coplane.

Further, the grounding terminal assembly comprises a plurality of grounding terminal main bodies and a plurality of shielding parts which are arranged at intervals, the grounding terminal main bodies are arranged in the same row, the shielding parts are arranged in the same row, and the grounding terminal main bodies are arranged in parallel with the shielding parts.

Further, the connection part includes a first connection part coplanar with the shielding part and a second connection part perpendicular to the first connection part.

Further, a direction from the first upper contact portion to the first lower contact portion is defined as a first direction, and a length of the shielding portion in the first direction is greater than a length of the second connection portion in the first direction.

Further, one of the ground terminal bodies is provided disconnected from the other adjacent ground terminal body.

Further, the grounding terminal assembly is formed by stamping and bending a metal plate.

Another aspect of the present application provides an electrical connector, which includes an insulative housing, a plurality of signal terminals fixed to the insulative housing, and the ground terminal assembly, wherein the signal terminals are located in the accommodating space.

Yet another aspect of the present application provides an electrical connector including a dielectric body, a plurality of signal terminals fixed to the dielectric body, and the ground terminal assembly described above, the signal terminals being in the same row as the ground terminal main body.

Further, the insulative housing includes a plurality of first holes and a plurality of second holes, the ground terminal main body is assembled to the first holes of the insulative housing, the shield is assembled to the second holes of the insulative housing, and the signal terminals are assembled to the second holes.

Further, the electrical connector includes a signal terminal module assembled to the second hole, the signal terminal module including a pair of the signal terminals and a first body integrally formed with the pair of the signal terminals.

Yet another aspect of the present application provides an electrical connector assembly, including the above-mentioned electrical connector and with electrical connector complex interworked electrical connector, interworked electrical connector includes the second body and assembles extremely the interworked signal terminal and the interworked ground terminal body of second body, interworked signal terminal with signal terminal electric contact, interworked ground terminal body with ground terminal main part electric contact.

The shielding part of the ground terminal assembly is connected with the adjacent pair of the ground terminal main bodies, and the ground terminal main bodies, the shielding part and the pair of the connecting parts form an accommodating space in a surrounding mode, so that the ground terminal assembly has a better shielding effect.

Drawings

Fig. 1 is a perspective view of an electrical connector assembly shown in an embodiment of the present application;

fig. 2 is a cross-sectional schematic view of the electrical connector assembly shown in fig. 1;

FIG. 3 is a perspective view of the electrical connector shown in FIG. 1;

fig. 4 is a perspective view of the dielectric body of the electrical connector shown in fig. 3;

fig. 5 is a partial enlarged view of the insulating body a shown in fig. 4;

fig. 6 is a perspective view of a signal terminal module of the electrical connector shown in fig. 3;

FIG. 7 is a perspective view of a ground terminal assembly of the electrical connector shown in FIG. 3;

FIG. 8 is a perspective view of another embodiment of the ground terminal assembly shown in FIG. 7;

FIG. 9 is an exploded view of the mating electrical connector shown in FIG. 1;

fig. 10 is a perspective view of a first terminal module of the mating electrical connector of fig. 9;

fig. 11 is a perspective view of the mating signal terminals of the first terminal module shown in fig. 10;

fig. 12 is a perspective view of a second terminal module of the electrical connector shown in fig. 9;

fig. 13 is a perspective view of the inter-fitting ground terminal assembly of the second terminal module of fig. 12;

FIG. 14 is a perspective view of another embodiment of the inter-mating ground terminal assemblies shown in FIG. 13;

fig. 15 is an exploded view of another embodiment of the terminal module shown in fig. 9.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible components of one or more of the associated listed items.

Referring to fig. 1 to 2, the electrical connector assembly of the present application includes an electrical connector 1 and a mating electrical connector 2 mated with the electrical connector 1.

Referring to fig. 3 to 7, the electrical connector 1 includes an insulative housing 10, a plurality of ground terminal assemblies 11 fixed to the insulative housing 10, and a plurality of signal terminal modules 12. The signal terminal module 12 includes a pair of signal terminals 121 and a first body 122 integrally formed with the pair of signal terminals 121. In the illustrated embodiment, the ground terminal assembly 11 is assembled to the insulative housing 10, but the present application is not limited thereto. In another embodiment, the ground terminal assembly 11 may be integrally formed with the insulative housing 10. In the illustrated embodiment, the signal terminals 121 are integrally formed with the first body 122 and then assembled to the insulating body 10, but the present application is not limited thereto. In another embodiment, the signal terminals 121 may be directly integrated with the insulation body 10 or directly assembled to the insulation body 10.

Referring to fig. 4 to 5, the insulating body 10 includes a bottom wall 101, and a first side wall 102 and a second side wall 103 extending from two opposite ends of the bottom wall 101. The bottom wall 101, the first side wall 102 and the second side wall 103 enclose a space 104. The bottom wall 101 includes a plurality of rows of first holes 1010 and second holes 1011 arranged at intervals. The first hole 1010 communicates with the second hole 1011. The first holes 1010 in two adjacent rows and the second holes 1011 in two adjacent rows are offset. The first hole 1010 in the nth row is aligned with the first hole 1010 in the (n + 2) th row (n is an integer of 1 or more). The second aperture 1011 in the nth row is aligned with the second aperture 1011 in the (n + 2) th row. The first side wall 102 and/or said second side wall 103 comprise ribs 1030. The first side wall 102 and/or the second side wall 103 comprise a first end 1031 close to the bottom wall 101 and a second end 1032 opposite to the first end 1031. In the illustrated embodiment, the rib 1030 extends from the second end 1032 to the first end 1031 and is connected to the bottom wall 101, but the application is not limited thereto. In another embodiment, the raised rib 1030 may be a protrusion disposed at the second end 1032, the protrusion not extending to the first end. The rib 1030 includes a guide 10301.

Referring to fig. 6, the signal terminal module 12 is assembled to the second hole 1011 of the insulating housing 10. The signal terminal 121 includes a first contact portion 1210, a second contact portion 1211, and a holding portion 1212 between the first contact portion 1210 and the second contact portion 1211. The first body 122 is integrally formed to the holding portion 1212. The first body 122 includes a pair of opposite first surfaces 1220 and a second surface 1222 connecting the pair of first surfaces 1220, a pair of first protrusions 1223 extending from the pair of first surfaces 1220, respectively, and a second protrusion 1225 extending from the second surface 1222. When the signal terminal module 12 is assembled to the second hole 1011 of the insulating housing 10, the first protruding portion 1223 and the second protruding portion 1225 are in interference fit with the insulating housing 10, so as to fix the terminal module 2 to the insulating housing 10.

The ground terminal assembly 11 is assembled to the first hole 1010 of the insulative body 10. Referring to fig. 7, the ground terminal assembly 11 is formed by stamping and bending a metal plate. The ground terminal assembly 11 includes a plurality of ground terminal bodies 110, connecting portions 113 extending from the ground terminal bodies 110, and shield portions 114 connecting the connecting portions 113 of an adjacent pair of the ground terminal bodies 110. The ground terminal body 110 includes a body portion 1101, and first upper and

lower contact portions

1102 and 1103 extending from opposite ends of the body portion 1101. The connecting portion 113 is bent from the main body 1101, and the connecting portion 113 includes a first connecting portion 1130 coplanar with the shielding portion 114 and a second connecting portion 1131 perpendicular to the first connecting portion 1130. The shielding portion 114 is located in the second hole 1011 of the insulating body 10. A direction from the first upper contact portion 1102 to the first lower contact portion 1103 is defined as a first direction. The shield portion 114 is disposed in parallel with the main body portion 1101. The length of the shielding portion 114 in the first direction is greater than the length of the connecting portion 113 in the first direction. The adjacent two ground terminal bodies 110, the connecting portion 113, and the shielding portion 114 enclose a receiving space 1140. The signal terminal module 12 is at least partially located in the receiving space 1140. When the ground terminal assembly 11 is assembled to the insulative housing 10, a plurality of the ground terminal main bodies 110 may be assembled at the same time, thereby increasing the assembly efficiency. The signal terminal modules 12 are at least partially located in the accommodating spaces 1140, and the signal terminals 121 of the signal terminal modules 12 are located between the adjacent pair of the ground terminal main bodies 110, so that the electromagnetic shielding effect of the ground terminal assembly 11 is increased.

In the illustrated embodiment, a plurality of the ground terminal bodies 110 are coupled together by a plurality of the shields 114 to facilitate manufacturing. Referring to fig. 8, in another embodiment, one of the ground terminal bodies 110 may be disconnected from the other ground terminal bodies 110, so as to achieve the purpose of shunting and transmitting various signals or power sources, i.e., the disconnected ground terminal body 110 may be used as a signal terminal, so as to meet the assembly requirements of different customers.

After the ground terminal assembly 11 and the signal terminal assembly 12 are assembled to the insulative housing 10, the first contact portion 1210 of the signal terminal 121 and the first upper contact portion 1102 of the ground terminal assembly 11 are located in the space 104 of the insulative housing 10, and the signal terminal assembly 12 is located in the receiving space 1140 formed by the ground terminal assembly 11, so that the ground terminal assembly 11 has a better shielding effect.

Referring to fig. 9 to 13, the electrical connector 2 includes a second body 20 and a plurality of terminal modules 21 assembled to the second body 20. The terminal module 21 includes a first terminal module 210 and a second terminal module 211 assembled together.

Referring to fig. 9, the second body 20 includes a lower sidewall 201, a pair of first sidewalls 202 extending from the lower sidewall 201, and a pair of second sidewalls 203 connecting the pair of first sidewalls 202. The lower side wall 201, the first side wall 202 and the second side wall 203 enclose a receiving portion 2031. The lower sidewall 201 includes a number of terminal apertures 2010. The second sidewall 203 includes a plurality of positioning holes 2033 and a plurality of receiving portions 2032.

Referring to fig. 10 to 11, the first terminal module 210 includes a third body 2101, a fourth body 2103 and a plurality of mating signal terminals 2102, which are integrally formed. The interfitting signal terminal 2102 includes a third contact portion 21021 and a fourth contact portion 21022, a first fixing portion 21023 and a second fixing portion 21024 located between the third contact portion 21021 and the fourth contact portion 21022, and a first connection portion 21025 connecting the first fixing portion 21023 and the second fixing portion 21024. The third body 2101 is fixed to the first fixing portion 21023. The fourth body 2103 is fixed to the second fixing portion 21024. The third body 2101 includes a first base 21011 and a number of first positioning blocks 21012 extending from the first base 21011. The fourth body 2103 includes a second base 21031 and a plurality of second positioning blocks 21032 extending from the second base 21031.

Referring to fig. 12-13, the second terminal module 211 includes a fifth body 2110 and a mating ground terminal assembly 2111 formed integrally. The fifth body 2110 includes a fastener 2112 assembled into the positioning hole 2033 of the second body 20 and fastened to the second body 20, so as to fix the second terminal module 211 to the second body 20.

The inter-fitting ground terminal assembly 2111 is formed by stamping and bending a metal plate material. The inter-mating ground terminal assembly 2111 includes a plurality of inter-mating ground terminal bodies 21110 and a plurality of shield plates 21116 arranged at intervals. The mating ground terminal body 21110 includes a second upper contact portion 21112, a second lower contact portion 21113, and a second fixing portion 21114 connecting the second upper contact portion 21112 and the second lower contact portion 21113. The shield piece 21116 includes a third connection portion 21119 extending from the second fixing portion 21114, a first shield portion 21115 extending from the third connection portion 21119, and a second shield portion 21118 extending from the first shield portion 21115. The second fixing portion 21114 is parallel to but not coplanar with the first shielding portion 21115. The first shield portion 21115 and a pair of the third connecting portions 21119 located at opposite ends of the first shield portion 21115 enclose a recessed portion 21111.

In the illustrated embodiment, the plurality of interfitting ground terminal bodies 21110 are connected together by a first shield portion 21115 to facilitate manufacturing. Referring to fig. 14, in another embodiment, one of the mating ground terminal bodies 21110 may be disconnected from the other mating ground terminal bodies 21110 for shunting and transmitting various signals or power, i.e., the disconnected mating ground terminal body 21110 may be used as a mating signal terminal to meet various requirements of customers.

The fifth body 2110 includes a plurality of first insulation blocks 21100, a plurality of second insulation blocks 21101, a plurality of third insulation blocks 21102, a plurality of first receiving grooves 21103, and a plurality of second receiving grooves 21104. A plurality of the first insulating blocks 21100 are fixed to a plurality of the ground terminal bodies 21110, respectively. A plurality of the second insulation blocks 21101 and the third insulation blocks 21102 are fixed to a plurality of the shield plates 21116, respectively. The first receiving groove 21103 and the second receiving groove 21104 are located at two opposite sides of the second insulating block 21101. The first receiving groove 21103 is located between the second insulation block 21101 and the third insulation block 21102.

The first insulating block 21100 includes a bottom portion 21105, a first retaining portion 21106 extending from the bottom portion 21105, and a second retaining portion 21107. The opposite sides of the first limiting portion 21106 are provided with a third accommodating groove 21108 and a fourth accommodating groove 21109. The third receiving groove 21108 is located between the first limiting portion 21106 and the second limiting portion 21107. When the first terminal module 210 is assembled to the second terminal module 211, the first base 21011 is located in the third receiving groove 21108 and is in interference fit with the first limiting portion 21106 and the second limiting portion 21107; the first positioning block 21012 is positioned in the first receiving slot 21103 and is in interference fit with the second insulating block 21101 and the third insulating block 21102 or a pair of the bottom portions 21105; the second base 21031 is positioned within the fourth receiving slot 21109; the second positioning block 21032 is located in the second receiving slot 21104 and is in interference fit with the pair of bottom portions 21105. The arrangement is such that the third body 2101 and the fourth body 2103 are securely positioned to the fifth body 2110.

In the illustrated embodiment, the third body 2101 and the fourth body 2103 are securely positioned to the fifth body 2110 by way of an interference fit, but the present application is not limited thereto. In another embodiment, bumps (not shown) can be provided on the third body 2101 and the fourth body 2103 to be in interference fit with the fifth body 2110. Alternatively, the bump may be disposed on the fifth body 2110.

When the terminal module 21 is assembled to the second body 20, the terminal module 21 is assembled to the accommodating portion 2031 of the second body 20, and the latch 21102 of the second terminal module 211 is assembled into the positioning hole 2033 of the second body 20 and latched with the second body 20, so as to fix the second terminal module 211 to the second body 20. The second upper contact portions 21112 of the inter-mating ground terminal assemblies 2111 and the third contact portions 21021 of the inter-mating signal terminals 2102 are received into the terminal apertures 2010 of the second body 20.

In the illustrated embodiment, the third body 2101 and the fourth body 2103 of the first terminal module 210 connect the plurality of the interworking signal terminals 2102 together, but the present application is not limited thereto. Referring to fig. 15, in another embodiment, the terminal module 21 includes a plurality of first terminal modules 221 assembled to the second terminal module 220. The first terminal module 221 includes a third body 2211, a fourth body 2212 and signal terminals 2210 integrally formed. The fourth body 2212 includes a second base 22120 and a second positioning block 22121 extending from the second base 22120.

The fifth body 2201 comprises a plurality of first insulating blocks 22010, a plurality of second insulating blocks 22011, a plurality of first receiving grooves 22012 and a plurality of second receiving grooves 22013. The first receiving groove 22012 and the second receiving groove 22013 are located at two opposite sides of the second insulating block 22011. The first insulation block 22010 comprises a pair of third receiving grooves 22014. When the first terminal module 221 is assembled to the second terminal module 220, the third body 2211 is located in the first receiving groove 22012, the second base portion 22120 of the fourth body 2212 is located in the third receiving groove 22014, and the second positioning block 22121 is located in the second receiving groove 22013. The first terminal module 221 in this embodiment is a free-standing design, and the third body 2201 is only provided with the first insulation blocks 22010 and the second insulation blocks 22011, so that the third insulation blocks are eliminated, and the electrical connector is further miniaturized.

Referring to fig. 1 to 2, when the electrical mating connector 2 is assembled into the space 104 of the electrical connector 1, the rib 1030 of the electrical connector 1 is assembled into the receiving portion 2032 of the electrical mating connector 2, so as to ensure that the first contact portion 1210 of the signal terminal 121 of the electrical connector 1 is aligned with the third contact portion 21021 of the signal terminal 2101 of the electrical mating connector 2 and realize electrical connection, and the first upper contact portion 1102 of the ground terminal main body 110 of the electrical connector 1 is aligned with the second upper contact portion 21112 of the ground terminal main body 21110 of the electrical mating connector 2 and realize electrical connection. At the same time, positioning the mating electrical connector 2 to the electrical connector 1 prevents wobbling of the mating electrical connector 2.

The shielding portion 114 of the ground terminal assembly 11 of the present application connects an adjacent pair of the ground terminal main bodies 110, and the receiving space 1140 is enclosed by the ground terminal main bodies 110, the shielding portion 114 and the pair of the connecting portions 113, so that the ground terminal assembly 11 has a better shielding effect; one or more of the ground terminal main bodies 110 in the ground terminal assemblies 11 can be disconnected from other ground terminal main bodies 110, so as to achieve the purpose of shunting and transmitting various signals or power sources, i.e. the disconnected ground terminal main bodies 110 can be used as signal terminals, thereby meeting various requirements of customers.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. An electric connector is characterized by comprising an insulating body, a grounding terminal assembly and a plurality of signal terminals, wherein the grounding terminal assembly and the plurality of signal terminals are fixed to the insulating body, the grounding terminal assembly comprises a pair of grounding terminal main bodies, a pair of connecting parts respectively extending from the pair of grounding terminal main bodies, and a shielding part connecting the pair of connecting parts, the grounding terminal main bodies comprise main body parts, and a first upper contact part and a first lower contact part which extend from two opposite ends of the main body parts, the grounding terminal main bodies and the shielding parts are of plate-shaped structures, planes of the plate-shaped structures of the grounding terminal main bodies and the shielding parts are parallel and not coplanar, the signal terminals and the grounding terminal main bodies are positioned in the same row, the grounding terminal main bodies, the shielding parts and the pair of connecting parts form an accommodating space in an enclosing manner, the signal terminals are positioned in the accommodating space, and the insulating body comprises a plurality of rows of first holes and second holes which are arranged at intervals, the ground terminal main body is assembled to a first hole of the insulating body, the shielding part is assembled to a second hole of the insulating body, the signal terminal is assembled to the second hole, and the first hole in two adjacent rows and the second hole in two adjacent rows are arranged in a staggered manner.

2. The electrical connector of claim 1, wherein the connecting portion comprises a first connecting portion coplanar with the shield portion and a second connecting portion perpendicular to the first connecting portion.

3. The electrical connector of claim 2, wherein a direction from the first upper contact portion to the first lower contact portion is defined as a first direction, and a length of the shield portion in the first direction is greater than a length of the second connection portion in the first direction.

4. The electrical connector of claim 1, wherein one of said ground terminal bodies is disposed disconnected from another adjacent one of said ground terminal bodies.

5. The electrical connector of any one of claims 1-4, wherein said ground terminal assembly is stamped and bent from sheet metal.

6. The electrical connector of claim 1, comprising a signal terminal module assembled to the second aperture, the signal terminal module including a pair of the signal terminals and a first body integrally formed with the pair of signal terminals.

7. An electrical connector assembly comprising the electrical connector of any one of claims 1 to 6 and a mating electrical connector mated with the electrical connector, the mating electrical connector comprising a second body and mating signal terminals and mating ground terminal bodies assembled to the second body, the mating signal terminals being in electrical contact with the signal terminals, the mating ground terminal bodies being in electrical contact with the ground terminal bodies.